/Engine/Source/Runtime/Experimental/GeometryCollectionEngine/Public/GeometryCollection/GeometryCollectionComponent.h
Register / Unregister delegates called when the skeletal mesh property is changed
[FDelegateHandle](API\Runtime\Core\Delegates\FDelegateHandle) RegisterOnGeometryCollectionPropertyChanged ( const [FOnGeometryCollectionPropertyChanged](API\Runtime\GeometryCollectionEngine\GeometryCollection\UGeometryCollect-\FOnGeometryColle-_1) & Delegate )